body {
            background-color: #f4f4f4;
            font-family: Arial, sans-serif;
            text-align: center;
            color: #333;
            padding: 40px 20px;
        }
        .logo {
            max-width: 180px;
            margin-bottom: 30px;
        }
        .container {
            background: #fff;
            border-radius: 12px;
            box-shadow: 0 0 15px rgba(0,0,0,0.1);
            max-width: 600px;
            margin: auto;
            padding: 30px;
        }
        h1 {
            color: #00c853;
        }
        p {
            font-size: 18px;
        }
        .btn {
            background-color: #00c853;
            color: white;
            padding: 14px 28px;
            font-size: 18px;
            font-weight: bold;
            border: none;
            border-radius: 8px;
            margin-top: 25px;
            cursor: pointer;
            text-decoration: none;
            display: inline-block;
        }
        .btn:hover {
            background-color: #029e45;
        }
        .whatsapp {
            margin-top: 35px;
        }
        .whatsapp a {
            display: inline-block;
            text-decoration: none;
        }
        .whatsapp img {
            width: 42px;
            height: 42px;
        }